{"id":"CVE-2026-64021","state":"PUBLISHED","title":"drm/xe/oa: Fix exec_queue leak on width check in stream open","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/oa: Fix exec_queue leak on width check in stream open\n\nIn xe_oa_stream_open_ioctl(), when param.exec_q->width > 1 the\nfunction returns -EOPNOTSUPP directly, skipping the existing\nerr_exec_q cleanup path. The exec_queue reference obtained by\nxe_exec_queue_lookup() is leaked.\n\nThe exec queue holds a reference on the xe_file, which is only\ndropped during queue teardown. The leaked lookup ref is not on\nthe file's exec_queue xarray, so file close cannot release it.\nThis keeps both the exec queue and the file private state pinned\nindefinitely.\n\nJump to err_exec_q instead of returning directly so the reference\nis released.\n\n(cherry picked from commit 339fa0be9e4a5d69fa47e91f4a36574224fb478f)","publishedAt":"2026-07-19T15:39:14.741Z","updatedAt":"2026-07-19T15:39:14.741Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f0ed39830e6064d62f9c5393505677a26569bb56","status":"affected","lessThan":"04ef7592eaadd9ca8f8f66e76452f73525cff819","versionType":"git"},{"version":"f0ed39830e6064d62f9c5393505677a26569bb56","status":"affected","lessThan":"4b0c4f0c1b133d4bfa31c167200bcda646873328","versionType":"git"},{"version":"f0ed39830e6064d62f9c5393505677a26569bb56","status":"affected","lessThan":"4d25342543c01310fc4e0cba7cb17c775e2421e2","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/xe/xe_oa.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.13","versionType":"semver"},{"version":"6.18.34","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.11","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/xe/xe_oa.c"]}],"references":["https://git.kernel.org/stable/c/04ef7592eaadd9ca8f8f66e76452f73525cff819","https://git.kernel.org/stable/c/4b0c4f0c1b133d4bfa31c167200bcda646873328","https://git.kernel.org/stable/c/4d25342543c01310fc4e0cba7cb17c775e2421e2"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/64xxx/CVE-2026-64021.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-64021","state":"PUBLISHED","datePublished":"2026-07-19T15:39:14.741Z","dateUpdated":"2026-07-19T15:39:14.741Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-07-19T07:54:57.027Z"},"containers":{"cna":{"title":"drm/xe/oa: Fix exec_queue leak on width check in stream open","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/oa: Fix exec_queue leak on width check in stream open\n\nIn xe_oa_stream_open_ioctl(), when param.exec_q->width > 1 the\nfunction returns -EOPNOTSUPP directly, skipping the existing\nerr_exec_q cleanup path. The exec_queue reference obtained by\nxe_exec_queue_lookup() is leaked.\n\nThe exec queue holds a reference on the xe_file, which is only\ndropped during queue teardown. The leaked lookup ref is not on\nthe file's exec_queue xarray, so file close cannot release it.\nThis keeps both the exec queue and the file private state pinned\nindefinitely.\n\nJump to err_exec_q instead of returning directly so the reference\nis released.\n\n(cherry picked from commit 339fa0be9e4a5d69fa47e91f4a36574224fb478f)"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f0ed39830e6064d62f9c5393505677a26569bb56","status":"affected","lessThan":"04ef7592eaadd9ca8f8f66e76452f73525cff819","versionType":"git"},{"version":"f0ed39830e6064d62f9c5393505677a26569bb56","status":"affected","lessThan":"4b0c4f0c1b133d4bfa31c167200bcda646873328","versionType":"git"},{"version":"f0ed39830e6064d62f9c5393505677a26569bb56","status":"affected","lessThan":"4d25342543c01310fc4e0cba7cb17c775e2421e2","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/xe/xe_oa.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.13","versionType":"semver"},{"version":"6.18.34","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.11","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/xe/xe_oa.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/04ef7592eaadd9ca8f8f66e76452f73525cff819"},{"url":"https://git.kernel.org/stable/c/4b0c4f0c1b133d4bfa31c167200bcda646873328"},{"url":"https://git.kernel.org/stable/c/4d25342543c01310fc4e0cba7cb17c775e2421e2"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-07-19T15:39:14.741Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.18.34"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"7.0.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}